👉 Pyrobitumen is a term used in the field of geology and mineralogy to describe a type of sedimentary rock that forms when organic matter, such as plants or animals, decays over time. It is formed from the remains of ancient organisms that have been buried deep underground for millions of years. In the context of pyrobitumen, it refers to the high-grade sedimentary rocks that occur in areas where there has been a significant amount of organic material decayed over time.